TY  - BOOK
AU  - Busch, David E.
AU  - Trexler, Joel C.
TI  - Monitoring ecosystems: interdisciplinary approaches for evaluating ecoregional initiatives
U1  - 577.3 
PY  - 2003///
CY  - Washinton
PB  - Island Press
KW  - Monitoreo ambiental
ER  -